Downdraft water-heater.



PATENTED 00T 27, 1903.

. ....,vvv-

` J. HADDOCK.

DOWNDEAET WATER HEATER.

APPLIUATION FILED AUG. 3, 1903.

H0 MODEL.

TNE Nonms PEvcRs co., Haro-Umm WASHINGTON. o. c.

Uurrnn STATES Patented october 27, reeel wnJnAM J. nannoeir or iowa CITY, iowa. y

. l t oow-N o ear-T warum HEAT-e n'.

l srsclricafrromming or autrement no. messa, dated october e?, isos'.

Applicant etranger 3.1903. strinse 165.049. ou man.)

To i/,I whom itmay cancel-m.

Be it known that I, WILLIAM J. llanoocx, of Iowa City, in the county of Johnson and State of Iowa, have invented certain new and useful Improvements in Downdra'ft 'ater- Y Heaters; and I do hereby declare the following all loss of gases, andcflec'tinga thorough y heating of the water by a simple and novel arrangement nud combination of the water l tubes and jackets.

The invention willhe hereinafter fully set forth, "and -particularly pointed out in the claims. Y

In the accompanying drawings, Figure `1 is a vertical sectional view of a furnace equipped with my improvement. Fig. 2 is a horizontal sectional view on line 2 2, Fig. 1.'

Referring to thedrawings, 1 designates the furnace-casing in itsentirety, and 2 the firepot, which is provided atits topwith the fuelsupply door 3 and with an air-inlet opening or openings l at any suitable pointl above the ordinary level of the fuel within the re-pot. Beneath the lire-pot is what I call a heatradiatiug chamber 5, in the bottom whereof is the ash-collecting pan or space 6. This chamber at its lower end and the tire-pot at its upper end areconnected, by branches 7 andB, respectively, with a pipe or 'ue l, which opens into a smokes-tack or chimney.

(Not shown.) lVithin brauch 8 is a damper l0, and in tine 9 is a damper 12. The latter is closed andthe former is opened inthe starting of th lire, and their positions are reversed' once the lfire is well under way, with the result that the smoke and all products of combustion travel downwardly, exit 'being found only by passing through 'the radiating# chamber and into' pipe 9 through branch .7.

13 designates a water-tube grate composed y.of a series of tubes extended transversely through or beneathA the repot atlthe lower end thereof, such tubes being connected at one end by a header 14, while at their other ends, whehare turned upwardly to allow for 'ing the crates.

expansion, they open into a header 15. Within the radiating-chamber 5 -is a-pipecoil 16, which at its upper end opens into header 15, while the lower end of auch coil is carried upwardly and connects with the header 14. A further series of coil-pipes 17 surrounds the lire-pot and is connected at one end to 'header 11, itsother end opening,r into header 15.v

1S designatesan ordinary shaker-grate lo cated a suitable distance below thewater-tuhe grate, so, that it will catch such portions of the fuel as may drop through the latter and allow them to be consumed by the hot flame of the burning gas and smoke.`

Snrroundingthe combustion-spacebeneath the tire-pot and the watenft'ube grate isawaterjacket 19, `which is connected at a low point with header il, while at an upperpoint this jacket is connected by n suitable riser 2O with header 15. A suitable covered open ing is formed in the jacket to permit ot' cleanpret'erahly opens into hendenllL In practi-'e the fuel rests directly upon the waterftuba Vr'a'te 13. After the re is started anddamper 10 is turned to close outlet branch flue S and damper 1S. is opened a direct draft down through the coal in the repot an-d'on through the radiating-chamber 1s The system returnypipe 21 secured, the gases, smoke, and fresh air to support combustion being carrieddown into the tire,v where the smoke and gases are consumed with' the coal. In this way the water in the water-tube grate is thoroughly Vheated Y by the bed of incandescent fuel resting thereon, the. heat in the combustion-space heats I the water in the surrounding jacket lflftudqy.

all the heat passing downwardly into the ra`- diatingcham'ber is utilized for heating the water within the coil 16. The heat of the fire-pot is also utilized for heating the water within the coil 17, the'several eonvolntions of which are placed close together, while those of coilvIGai-e spaced apart-to allow the kfreecirculation of the heat therearound. .In this way the water will circulate freely throughout the entire heating system and as thus heated may be utilized in any desired manner..V Preferably. I form conneetionswth a series of radiators-(not. shown) by a supply-,riser 22, leading from header 15.

From what has been said the advantages of Il?? i meeneemt wr... A

Vzo

my invention will be apparent to those skilled in the art to which it nppertins.

It will be seen ,that I have provided extremel)- simple and highly ciicent menus for 5 etecting the full ntiliwtion of theheat of a don-nd m tt smoke-'consu ini-ug furnace for rais-V ingv the temperature of water contnined 'in n coni plete con nelcted syste n1 of water-tubes and jtckets exteudnglbenenth and around thev lire-pot and encircling the conibnstionspace and also within the radintiugchamber.-

1. In n downdmft-furnace, in combination, a fire-pot, :t ivntengmte composed of n series 15 of tubes and liendets into which said tubes open,' n radiating-chamber beneath the tirepot, :ind :t conti nuons pipe-coilarranged with in such chamber in commnncation'ivith the water-tube grate, substzintiell;- as setforth.

:o 2. Inn downdrnftffnrnaceLncoiubinnton, n fire-pot., n wntengrete composed of'nseries of tubes and headers into which said tubes open, n coil of pipe encircling said tire-pot.

and connecting at. its ends with said witten' 2 5 tube grate, n rndting-clmmber beneath said fire-pot, and n water-tube coil'wthin such chamber and also connected with said grate,4

substantially ns set forth.

3. The combination with thc casing having the tire-pot and the radintinghamber, of the outlet flue or pipe, branches connecting said fire-potnud chamber with said pipe, dempers for controlling the passages directly from the lire-pot or through the rediatinghamber, a.

4 35 water-tube grate extending through said tire-- ve fire-pot, n rad n. lire-pot having an upper outlet branch, aradinting-chamber beneath such re-pot hav.

ing a. lower otlet branch, an upright due or 45 pipe into which both branches open.' dempers for con'trglliov the. passages through snch bron-ches, pot and ndiating-clwmber, n water-tube. grate located, above said grate-hors, a ppe- 5o coil within said radiating-chamber connected at its ends with said grate,l and n water-jacket.

snrronndin the combustion-space benefit-h 'said grate, substantially ns-setlforth.

5. In a dowtndrnl'bfurnace, in combination,` inline-chamber thereunder, gmtebnrs beneath such tire-pot, a. series of \vnter-tnbes above such gratelmrs forming a water-tube grate, said vrntertubes being upwardly turned nt. one end, headers into which said walexet'ubes open at. their ends, and n water-jacket surrounding the combustionspace beneath said imite and connected to one of seid headers, substantie-ily as set forth. 65'

6. In ado# dralt-furnace,incombiuntlon, with a water-circulating system, n lire-pot, a

te thereunder hnvingheaders,

a water-jee et into which the system returnpipe opens and which is connected to one of 7o said headers, a coil surronndingsnid lire-pot connected Eo one of said headers and to said grate, the spplyriser lending from such header, anda coil within the radiating-cham- -bei connected at its ends to sni'd headers, snb- `75 stantially as sel; forth.

In testimony whereof I have signed this p specification in the presence ol' two snbscribingvwitnesses. v t

v WILLIAM J. HADDOCK.

Witnesses:

Criss. G. MARTEN, WILLIAM E. CHUM.

heirs intermediate said rey 

